set_input_select

Set an input_select to a specific option.

SERVERHa Nexus Agent SOURCEfistacho/ha-nexus-agent

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/fistacho-ha-nexus-agent/set-input-select.md

WHAT IT DOES

What set_input_select does on Ha Nexus Agent

AI agents use set_input_select to create or update resources in Ha Nexus Agent, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ha Nexus Agent environment.

RISK

Why set_input_select is rated Medium

This tool modifies state in a Home Assistant smart home system by changing an input_select entity to a specified option. This is a reversible write operation (the value can be changed back), not destructive.

From the tool's definition Tool name 'set_input_select' and description 'Set an input_select to a specific option' indicates modification of Home Assistant input_select entity state to a new value.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_input_select safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ha Nexus Agent, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_input_select, this is the rule to start with:

set_input_select Rate-limited

set_input_select stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_input_select": {
      "limits": [
        {
          "counter": "set_input_select_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ha Nexus Agent, apply this rule, and every set_input_select call is checked against it from then on.

FAQ

Questions about set_input_select

What does the set_input_select tool do? +

Set an input_select to a specific option. It is categorised as a Write tool in the Ha Nexus Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_input_select? +

Register the Ha Nexus Agent MCP server in PolicyLayer and add a rule for set_input_select: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Ha Nexus Agent. Nothing to install.

What risk level is set_input_select? +

set_input_select is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_input_select? +

Yes. Add a rate_limit block to the set_input_select rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block set_input_select completely? +

Set action: deny in the PolicyLayer policy for set_input_select. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides set_input_select? +

set_input_select is provided by the Ha Nexus Agent MCP server (fistacho/ha-nexus-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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